/*
 * Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
 * license agreements.  See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.  Crate licenses
 * this file to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.  You may
 * obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial agreement.
 */

package io.crate.planner.node.ddl;

import io.crate.data.Row;
import io.crate.data.RowConsumer;
import io.crate.execution.ddl.ESClusterUpdateSettingsTask;
import io.crate.planner.DependencyCarrier;
import io.crate.planner.Plan;
import io.crate.planner.PlannerContext;
import io.crate.planner.operators.SubQueryResults;
import io.crate.sql.tree.Expression;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;

public class ESClusterUpdateSettingsPlan implements Plan {

    private final Map<String, List<Expression>> persistentSettings;
    private final Map<String, List<Expression>> transientSettings;

    public ESClusterUpdateSettingsPlan(Map<String, List<Expression>> persistentSettings,
                                       Map<String, List<Expression>> transientSettings) {
        this.persistentSettings = persistentSettings;
        // always override transient settings with persistent ones, so they won't get overridden
        // on cluster settings merge, which prefers the transient ones over the persistent ones
        // which we don't
        this.transientSettings = new HashMap<>(persistentSettings);
        this.transientSettings.putAll(transientSettings);
    }

    public ESClusterUpdateSettingsPlan(Map<String, List<Expression>> persistentSettings) {
        this(persistentSettings, persistentSettings); // override stale transient settings too in that case
    }

    public Map<String, List<Expression>> persistentSettings() {
        return persistentSettings;
    }

    public Map<String, List<Expression>> transientSettings() {
        return transientSettings;
    }

    @Override
    public void execute(DependencyCarrier executor,
                        PlannerContext plannerContext,
                        RowConsumer consumer,
                        Row params,
                        SubQueryResults subQueryResults) {
        ESClusterUpdateSettingsTask task = new ESClusterUpdateSettingsTask(
            this, executor.transportActionProvider().transportClusterUpdateSettingsAction());
        task.execute(consumer, params);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        ESClusterUpdateSettingsPlan that = (ESClusterUpdateSettingsPlan) o;
        return Objects.equals(persistentSettings, that.persistentSettings) &&
               Objects.equals(transientSettings, that.transientSettings);
    }

    @Override
    public int hashCode() {

        return Objects.hash(persistentSettings, transientSettings);
    }
}
